Category Archives: history of science

There is no answer to “what you really are”. Because there is no answer to “what you really are”.

There is only what you understand. What you create. And its what you create that answers what you are. Because that’s what you understand.

Nobody talks what your mother is really like. She makes lovely pies. And people say your mother is lovely. Because she understands how to create lovely pies and she creates lovely pies. There is no answer to what she is really like. More…

The quality of a scientific paper are not ZERO if citation is zero. Perhaps we need to define two parameters, quality and significance of scientific communication. Quality; a well done research in the best traditions and methods available. Significance; the outreach of the paper to bring effect into others work and others understanding toward the subject matter.

While there will always be a downside to both parameters, citation reflects the significance (and quality as much as it correlated to significance) of a paper. More…

Result; now that photons are mass-less, their energy, momentum, speed, etc are no more variables, in the sense of arbitrariness. They are constants, taking only a few values, but constant in a given situation. But other particles have these properties; arbitrary. So electrons energy and momentum are not fixed, but arbitrary.

But as long as we are considering only elementary particles (that is, we are in a Quantum Zone) eg, electrons, protons, photons, and not nutmegs, soccer balls and airplanes and satellites there is another quantity that is of important consequence that is constant. Spin; whether a mass-less particle or not, spin has the same magnitude for them. that is spin is same for photon, its always 1. Spin for an electron is always 1/2. Spin for proton is always 1/2. Its for this reason photon is called a Boson**. Any thing with spin, 0, 1, 2, etc will be a Boson. Anything with spin 1/2, 3/2 etc will be called Fermion. More…

A very few particles (out of 1000s) are named after scientists, eg the so called mu meson was called a Yukawa Meson, although it turned out to be a misnomer. Mu-meson was found to be a lepton, rather than a meson, as was thought by Yukawa and others.

Now called Muon it belongs in the same class that an electron belongs to, leptons, which are both Fermions. Hence initially thought to be a Boson (because all mesons would be bosons) the muon is actually a Fermion (all leptons are Fermions).

Should we say; initially muon was named after Bose, then correctly; after Fermi? That would be HOKUM. Right thing would be to say; it was named after Hideki Yukawa (wrongly as a meson or boson) then it has been named as muon which is now a Fermion. But its still named after Yukawa; given to a misnomer-correction. It can be called Yukawa-Lepton MUON (instead of Yukawa Meson Mu).

Nowhere Bose or Fermi have been the scientists after whom this particle has been named. Bose and Fermi are scientists after whom a principle of physics or nature has been named but not a particle. That would clear any mischievous air. More…

1. Aristotle Fallacy; A notion that objects need force for their movement. It contradicts the idea of inertia. Newton corrected this by introducing the first law, things continue in their state of motion, a quality called as inertia, without requiring force and the motion changes due to application of force.

2. Earth is flat; that there is a boundary where you fall off its edge. [I am not going to explain or tell you how and when we found this was a horrendously hilarious and misleading notion we had. But it might have been used in the past by parents to discipline their teen-age kids. Don’t go out, you will fall off earth. That would have kept them in check.]

3. Rotational Dynamics; Earth is accelerating in a near circle in addition to about itself, so additional forces are acting that changes our observation about the world. Newton tried to understand this (not successful) in his last days, by rotating a bucket full of water, his laws could not explain the effects observed. His laws needed to be modified slightly. The same thing makes objects feel weightless by a given amount if they are accelerating towards a gravitational field (eg merry go round, satellites) This is the basis of many works of Einstein. First came Mach’s Principle which says observations made from objects that are accelerating in circular paths are to be corrected by fixing frames of references to stars that are so far away that the rotational motion is neglected. [if you shake your head while looking at stars and shake your head by looking at nearby objects such as a light post, evidently the light post shakes more and the stars less]. This helps in correcting observed phenomena from earth. Earth moves at 30 kms/second wrt sun … More…

But the neutron stars are still quite large. This is because the electrons are about 1000 times as longer in how much space they require to sit in that system, than the neutrons. the neutrons are heavy hard attitude guys, they will go no where. But the electrons while occupy such a large couch are far far less heavier than are neutron. So they are basically whats called “soft”. They are long legged and eat less energy and when vanish the neutron stars have collapsed into an adjacent mass state but quite so very smaller in volume, a 1000 times, smaller.

So two things happened that are called supernovae (that is super star phenomena).

Post navigation

copyright 2012 – 2017 @Manmohan Dash

This work is licensed under a Creative Commons Attribution-NoDerivs 3.0 Unported License.
All materials and contents in this website are copyrighted by Creative Commons license in addition to fundamental rights of the owner which may change in the course of time. All contents in this website belong to the founder and owner of this website, Manmohan Dash, unless otherwise implicit or explicit.

Follow this website via Email.

Enter your email address to follow this web-journal and receive notifications of new posts by email.

boating at karinji lake, mysore

African Giant at Mysore zoo, hellaw guys

The boating in lake, Jaipur.

Can I see more?

Giraffe at Mysore zoo

7 digital photography lessons

Aug 20, 2015. If you want to know the technicalities of digital photography this is an immensely useful lesson.

Ace your interview.

Sept 25, 2015.
How to do well in your interview. Don't apply randomly. Be well prepared.

Questions on Vectors and Electromagnetism.

This slide gives 24 short and long answer type questions on the last two lectures we discussed this past week.
We are going fast? Yes.
And its raining cats and sputniks around here on slide-share readers response. So go make your own mark.

Physics for Engineers, Electrodynamics !

From 9th Nov 2009,
New content; 21-23 Aug 2015

Physics for Engineers and Physicists; Vector Analysis !

Originally; 9th November 2009.
Updated; 14th-17h Aug 2015

Heisenberg’s Uncertainty Principle !

24.7.2015
The idea of Heisenberg's position and momentum uncertainty in simplified details.